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Calcimator

Green Screen Distance Calculator

Calculate minimum subject-to-screen distance to avoid green spill.

Inputs

ft
mm
ft
ft

Results

Min Subject-Screen Distance

12 ft

Camera Distance (full body)11.2 ft
Total Room Depth23.2 ft
With Lighting Zone26.2 ft
How to Use This Calculator
  1. Enter Subject Width in feet — the widest part of your talent or prop.
  2. Input Lens Focal Length (mm) and Sensor Size to define your camera field of view.
  3. Set the number of Lighting Zones (1–3) — more zones reduce spill and hot spots.
  4. Read Min Subject-Screen Distance (ft) to ensure subjects stand far enough from the backdrop.
  5. Camera Distance (ft) gives the ideal lens-to-subject placement for a clean key.
  6. Total Room Depth (ft) is the minimum studio length needed to pull off the shoot.
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